Computers communicate with each other by numbers unlike humans who are accustomed to using names instead of numbers. In line with that, for us humans to communicate with computers through names instead of numbers such as IP addresses which are very difficult to remember, Domain Name System or most commonly known as DNS, will definitely make the work easier. DNS resolves domain names to IP addresses. For example, if you type in sav25.com, the DNS server will search into its database to find its matching IP address for that domain name and resolve it to the IP address. Your computer will then be able to communicate with the web server of sav25.com and retrieve the webpage. Basically, DNS is like a phonebook where you can just search for the name of the person you are trying to call, and your phone will just dial the mobile number saved into your friend’s name.